The tramesa.com website has been validated following these standards and tools: Use of the W3C standards: XHTML 1.0 Transitional language Language for the CSS style sheets 2.1 Web Content Accessibility Guidelines (WCAG level AA) How the elements are shown on the screen and the content is coded in a logical order. Simplified browsing system comprised of a main menu. XHTMLStrict language and CSS 2.1 Web Content Accessibility Guidelines (WCAG level AA) Keyboard shortcuts The keyboard shortcuts used are: h : Home a : Accessibility policy p : Privacy policy m : Site map The use of access keys is conditioned by the browser: Internet Explorer: ALT +shortcut + ENTER Firefox: ALT + Shift + shortcut (in older versions ALT + shortcut) Opera: SHIFT + ESC + shortcut The website has an AA accessibility level, expanded with several points and recommendations from level AAA to improve end accessibility.